Today I learnt that If the moon passes through the edge of Earth's shadow, it's called a partial eclipse. Passage through the dense centre of the shadow is a total lunar eclipse. A sequence of four total lunar eclipses including no partial eclipses is called a tetrad.For mercy a year is 88 human days!Also that Mercury circles the Sun in only 88 days, compared to 365 days for Earth, at at an average speed of 105,947 miles (170,505 kilometers) per hour. This is faster than any other planet in the Solar System.
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